Costs Incurred in Oil and Gas Property Acquisition, Exploration and Development Activities (Detail) (USD $)	9 Months Ended	12 Months Ended
Jun. 30, 2012	Sep. 30, 2011
Acquisition of Properties:
Proved
Unproved	55,115	422,362
Exploration costs	89,772	163,914
Development costs

- Definition

Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have proved reserves.

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- Definition

Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have unproved reserves.

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- Definition

Development costs incurred, including capitalized costs and costs charged to expense, in oil and gas activities.

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- Definition

Exploration costs incurred, including capitalized costs and costs charged to expense, in oil and gas activities.

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